I bought this --
AUTHENTIC MAC / M.A.C 219 PENCIL BRUSH - FULL SIZE on eBay, also, Brushes Applicators, Make-Up Cosmetics, Health Beauty (end time 08-Jun-08 16:41:14 BST)
considering it's only about £3 GBP (or about 6 dollars) cheaper than buying direct from MAC, so with that knowledge, I knew...